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name: graph-query description: Query the code graph for callers, dependencies, and blast radius. Use when you need to understand code relationships, find what calls a function, determine impact of changes, or explore the codebase structure. allowed-tools: Bash

Graph Query Skill

Query the code graph built from ts-morph static analysis to understand codebase structure and relationships.

MCP Tools (Preferred)

When the MCP server is available, use native tools:

Use graph tools instead of Grep chains. 1 query = 10 greps worth of info.

CLI Quick Reference (Fallback)

Copy# Shortcuts
bun run g:calls <function>    # Who calls this?
bun run g:deps <type>         # Who uses this type?
bun run g:blast <file>        # Impact of change?
bun run g:find <name>         # Where is this?
bun run g:summary             # Stats for codebase

# Long form (equivalent)
bun run checkpoint graph what-calls <function>
bun run checkpoint graph what-depends-on <type>
bun run checkpoint graph blast-radius <file>
bun run checkpoint graph find <name>
bun run checkpoint graph exports <package>

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When to Use

• Finding what calls a specific function
• Understanding dependencies on a module/class/type
• Assessing blast radius before refactoring
• Searching for entities by name or type
• Exploring package exports
• Getting codebase statistics

CLI Reference

All commands use the checkpoint CLI:

Copybun run checkpoint graph <command> [args...]

Commands

Parse Package

Parse a package directory and store the graph data:

Copybun run checkpoint graph parse <package-path> [package-name] [--quiet]

Example:

Copybun run checkpoint graph parse packages/openbadges-types
bun run checkpoint graph parse packages --quiet  # Suppress verbose output

What Calls

Find all callers of a function or method:

Copybun run checkpoint graph what-calls <name>

Example:

Copybun run checkpoint graph what-calls parsePackage
bun run checkpoint graph what-calls storeGraph

Callers (Direct)

Find direct callers of a function (simpler output than what-calls):

Copybun run checkpoint graph callers <function-name>

Example:

Copybun run checkpoint graph callers handleGraphCommands

What Depends On

Find all entities that depend on a given entity:

Copybun run checkpoint graph what-depends-on <name>

Example:

Copybun run checkpoint graph what-depends-on OB3Credential
bun run checkpoint graph what-depends-on BadgeClass

Blast Radius

Find all entities that would be affected by changes to a file:

Copybun run checkpoint graph blast-radius <file-path>

Example:

Copybun run checkpoint graph blast-radius src/graph/index.ts
bun run checkpoint graph blast-radius packages/openbadges-types/src/index.ts

Find Entities

Search for entities by name, optionally filtered by type:

Copybun run checkpoint graph find <name> [type]

Valid types: function, class, type, interface, variable, file

Example:

Copybun run checkpoint graph find Badge
bun run checkpoint graph find Badge class
bun run checkpoint graph find Credential type

Exports

List all exported entities from a package:

Copybun run checkpoint graph exports [package-name]

Example:

Copybun run checkpoint graph exports openbadges-types
bun run checkpoint graph exports  # All packages

Summary

Show graph statistics for a package or entire codebase:

Copybun run checkpoint graph summary [package-name]

Example:

Copybun run checkpoint graph summary claude-knowledge
bun run checkpoint graph summary  # All packages

Example: Understanding Impact Before Refactoring

Copy# 1. Find what the function is called
bun run checkpoint graph what-calls createBadge

# 2. Check what depends on the type it returns
bun run checkpoint graph what-depends-on Badge

# 3. Get full blast radius for the file
bun run checkpoint graph blast-radius src/badges/create.ts

Example: Exploring Unfamiliar Code

Copy# 1. Get overview of a package
bun run checkpoint graph summary openbadges-types

# 2. See what it exports
bun run checkpoint graph exports openbadges-types

# 3. Find specific entities
bun run checkpoint graph find Credential

Output Format

Query Commands

Most commands (what-calls, what-depends-on, blast-radius, find, exports, callers) return JSON with:

• query: The command type
• results: Array of matching entities/relationships
• count: Number of results

Entity objects include:

• id: Unique identifier
• name: Entity name
• type: Entity type (function, class, type, interface, variable, file)
• package: Package containing the entity
• file: File path
• line: Line number (where applicable)

Parse Command

The parse command returns a different schema:

• command: "parse"
• packagePath: Path that was parsed
• packageName: Resolved package name
• files: Number of files parsed
• entities: Number of entities found
• relationships: Number of relationships found
• stored: Object with entities and relationships counts stored to database

Summary Command

The summary command returns statistics without a results array:

• query: "summary"
• package: Package name or "all"
• totalEntities: Total entity count
• totalRelationships: Total relationship count
• byType: Breakdown of entities by type